Volvo MD2010, MD2020, MD2030, MD2040 Engine cylinder head installation
 1. Clean the surface of the cylinder head and cylinder
    block. Remove any rust or soot from the screw ho l es and threads for the cylinder head screws.
2. Fit on the new cylinder head gasket.
3. Apply grease containing molybdenum disulphide
   on the cylinder head screws.
   NOTE! The screws are surface treated and must
   not be cleaned with a steel brush.
   Note: I f the cylinder head is painted the mating sur faces for cylinder head screws must be free from
   paint, otherwise the clamping force in the screw
   union will be adversely affected.
4. Check that the tubular pins (guides) are fitted in the
   block. Place the two rear cylinder head screws in
   the cylinder head and fit the hea

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   5. Tighten the cylinder head screws in three stages as per the following. See tightening diagrams Fig. 30-
31.

1st tightening
MD2O10. MD2020 10 Nm (7.40 ft.lbs)
MD2030 20 Nm (14.80 ft.lbs)
MD2040 30 Nm (22.10 ft.lbs
2nd tightening
MD2O10, MD2020 20 Nm (14.80 ft.lbs)
MD2030 35 Nm (25.80 ft.lbs)
MD2040 70 Nm (51.70 ft.lbs)
Final tightening
MD2O10, MD2020 35-40 Nm (26-30 ft.lbs)
MD2030 50-53 Nm (37-39 ft.lbs)
MD2040 90-95 Nm (66-70 ft.lbs

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8. Fit the oil pressure pipe between the block and
5. Tighten the cylinder head screws in three stages as cylinder head (rocker mechanism on MD2040).
  per the following. See tightening diagrams Fig. 30-
  31.
 Tightening torque 10-13 Nm (7.4-9.6 ft.lbs).
 32
9. MD2O10, MD2020:Fit the circulation pump.
  MD2030:Fit the circulation pump and thermostat
  and spring (see Fig. 35).
10. Fit the glow plug, Tightening torque: see Technical
 data. Fit the conductor rail and connect the electric
 cable.

11. Fit the copper gaskets, heat shields (MD2030) and
  i nserts (MD2O10-MD2030) to the injectors as per
  Fig. 34.
  Fit the injectors. Use socket L=80 mm (3.15 in),
  key width = 22 mm (MD2O10-MD2030), and 27 mm
  ( MD2040).
  Tightening torque MD2O10, MD2030, MD2040:
  60-70 Nm (44.3-51.7 ft.lbs)
  Tightening torque MD2030:
  80-85 Nm (59.0-62.7 ft.lbs).
  12. Put on new copper gasket and fit the fuel leak pipe.
  Tighten the nuts and connect the return pipe.
  13. Fit the delivery pipe complete. Tightening torque
  20-25 Nm (14.8-18.4 ft.lbs).
14. MD2O10, MD2020, MD2030: Fit the induction mani fold.
  MD2040: Fit the inlet pipe complete with air filter.
  Fig. 35. Fitting of thermostat (MD2O10, MD2020,
  MD2030) and expansion tank.

15. MD2O10, MD2020: Fit the rubber seal, thermostat
(3) and spring (2) in the heat exchanger housing (1)
    Fig. 36. Fitting of thermostat (MD2040)

16. Fit the expansion tank complete with heat exchan ger. Connect the hoses to the heat exchanger
  housing and refrigerant pump. Tighten the hose
  clips.

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